domain eukarya plant kingdom. traits of plants: ♣ multicellular, photosynthetic, eukaryotes ♣...
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Domain Eukarya
Plant Kingdom
Traits of Plants:♣ Multicellular, photosynthetic, eukaryotes♣Waxy cuticle to prevent water loss♣ Stomata (openings on underside of leaf)
Traits of Plants:•Egg/embryo develops inside female gametangium
•Land plants evolved from charophytes (green algae)
Divisions of plant kingdom:1.Division Bryophyta
Traits: –no vascular tissue, tiny sperm swim to egg
–Live where it is wet.
Division Bryophyta (cont):–Example: moss–Dominant generation is gametophyte
– Be able to draw & label life cycle of moss.
2.Division TracheophytaTraits: vascular plants with
xylem & phloem
Types of Tracheophytes:a) seedless plants example: fern
Dominant generation is sporophyte.
Types of Tracheophytes:b.) Seed plants
Types of seed plants: 1) Gymnosperms (naked seed plants)ex: conifers (cone bearing)•Traits: leaves are needle- like. They have two kinds
of cones (male & female)
Gymnosperms (cont):Dominant generation is sporophyte.
Male gametophyte: pollen grain
Female gametophyte: part of ovule in female cone
•Male gametophyte produces sperm.•Female gametophyte produces egg.•Where does fertilization happen? in female gametophyte, in ovule•What is produced from zygote? Embryo within a seed
Tracheophytes (cont):Types of seed plants cont.2) Angiosperms (flowering plants)
•Traits: leaves are flat & broad.
•Vascular tissue is thicker than in Gymnosperms.
•Dominant generation is sporophyte.
female
male
Be able to draw a flower and label all parts
How and where do seeds form?
Ovule, found in ovary of flower,becomes the seed. It contains the egg.
What is the function of fruit?
Dispersal of seedsWhat does fruit develop from?ovary of flower
Define:Sporophyte- diploid (2n) part of
life cycle that makes haploid (n) spores by meiosis
Gametophyte- haploid (n) stage of the life cycle that makes gametes by mitosis.
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